Note 7 - Investment Securities (Details) - Investment Securities Held-to-maturity (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Schedule of Held-to-maturity Securities [Line Items]
State and municipal securities	$ 146	$ 146
State and municipal securities	158	162
US States and Political Subdivisions Debt Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
State and municipal securities	146	146
State and municipal securities	12	16
State and municipal securities	158	162
State and municipal securities	$ 0	$ 0